Turnstile
October 26, 2010
This pawl and ratchet was to make noise.
A pawl and ratchet insures people only go "in" one way,
The first gearing "counts" 4 people and the second "counts" 20.
How many does the final way count?
One fourth of the way was 25.
Answer is 100.
of Linda Hamilton
hamilton@marshall.edu
With support from
Webpages and pictures on
http://www.marshall.edu/
LEGO
Web camera on
http://legocamera.marshall.edu
Teleoperate AppaLEGO CITY at
http://lego.marshall.edu
NASA site of Remote Sensing on
http://SENSORSCITY.marshall.edu